Loom shuttle



J. COLDWELL LOOM SHUTTLE April 25, 1933.

Patented Apr. 25, 19133` UNITED STATES.

JOSEPH; coLnWELn on FALL RIVER, MASSACHUSETTS y Loon SHUTTLE Application led February l24,` 1931i Serial lilo. 517,794'.

This invention relates to loom shuttlesforweaving and is intendedi tov provide a reli'- able and satisfactory constructiono fV shuttle that will permit the delivery of the filling yarn-l unwoundv from the bobbin through anl outlet eye located on' one side of the shuttle near the middle portion thereof.

The shuttles most commonly in use are constructed to deliver the yarn throughI an lo; outlet passage or eye located intheforepalrt of the shuttle, butV this.` necessarily results in a very unequal tension of the yarn on the forward and return picks of the shuttle,

because in one oase theyarn draws; olf very near theend oflv the shuttle and;A inthe other oase the yarn drags alongnearly the whole length ofthe shuttle as the shuttle travels through the war-p shed. ItV has been pror posed to carry the filling yarn back from lthe yarn passage in the forepar-t of the shuttle, insideV the bobbin-receiving chamber of the shuttle andl1 thenl carried out throughanY eye somewhat back ofthe forward end-y of the bobbin, but inpractieemuehdifficulty is caused bythe; tendency of-thefilling yarnas it unwinds fromthe bobbin whipping into the return stretch of yarn and portion of the bobbin chamber are prevented from whipping in together andEL causing breakage. n Generally speaking, the invention comprises a shuttle body provided-with the usual bobbin-containing chamber from` which*l thelyarn passes'forward through anpassage bobbin-containing chamber, which is provided with arprotector or guardin the for-m,

as here shown, ofa rearwardly extending# partition interposedbetween the axis-f of the :bobbin `and the sidef wallf ofthe. shuttle body, said. partition. being; arranged to --pro in the'forepart andis then returned into thetect the return stretch ofthe yarnpassing to the outlet' eyel in the side 'wall of theshuttle'ag'ainst contact withtheforward-l-y travelling yarn thatV whips about the bobbin asit uncoils therefrom.

l Ifn the accompanying drawingl have illustratedr two forms embodying the princi:- ples-of this invention applied tof'shuttles` of slightly different type; v v Y In the drawing Figl is a planview ofl a loomI` shuttle in whichy the protector orl guard, for separatingthe` forwardly advancing and the returning" stretches of the filling yar-n being delivered, is formed integrally withtheV bobbin body itself. l

Fig. 2'is adetaill in side elevation@ of the forepart ofthe shuttle showing the tensioning wires for maintaining tension onthe yarn;

Fig. 3 is a side elevation showing the outlet-V side of the. shuttle, theshuttle being inver-ted to exposethat side to-view.

Fig;4 4 is a` horizontal sectionI on the plane of 'Fig'.v 2. i Y

Fig. 5 is a transverse section through' the plane off the outlet eye on plane Y-Y of Fig: 4:' y

. Fig. 6 is alongitudinal vertical sectionI on plane-G-O-of Fig. 4.

Fig. 7 is-a' plan view, partly `in horizontal section, showing amodied construction of myimproved shuttle.-

In the y practice of thisinvention as illustrated in the/drawing, the shuttle'body lA is formed with the usual bobbin-containing,l chamber between the forepart 2 and the'rear' par-t 3f, in which isy mountedY the bobbin- -Carrying spindle 4 andthe filling bobbin 5 on whichv the-lling yarn is wound fordeliveryin the-process of weaving The freeend 'of' the yarn is threadedE forward end ofthel bobbin chamber, thence"v is threadedf through suitable tensioning de# vices, suoli as'the coil member 7 and` the verL4 t1`cal wires 8, a well known formoftensioning device used in weaving vsilk and?. rayon, andv is v then threadedy bachiv into theV bobbin chamber through theL passage 9,' which. is.

ktliroughza1 passage 6 in the forepart at'the bored through this part of the bobbin wall and is provided with a guide eye 10 of porcelain, or the like, to eliminate wear.

There is also provided for convenience a small vertical bore 11 through which a fine hook may be inserted to draw up the forward or in-threaded portion of the yarn, so that Yit may be threaded into the return passage 12 which is formed by cutting a narrow kerf from the vertical bore 11 substantially parallel with the outsideV of the shuttle leaving a partition member 13 integral with the shuttle that acts to separate the return* stretch of yarn from the forwardly moving uncoiling portion of the yarn.

- When the free end of the filling yarn has been threaded into the return passage 12 by whatever means, it is then threaded outwardly through the lateral delivery eye 14, through which the yarn passes as |it is paid out in the weaving operation. This delivery eye 14 is located in the middle area or-portion of the shuttle, although not necessarily at the exact middle point. l

As shown in Fig. 1 and in Fig. 6 of the drawing, at 13a, the top edge of the partition 13 is sloped downwardly and rearwardly so as to afford no corner or angleagainst which the whipping yarn can catch. l It therefore .functions as a complete protector for preventing the entanglement ofthe unwinding yarn with the return stretch of the yarn as the latter passes to the outlet or delivery eye.y

In Fig. 7 I have shown a modified construction applied to a well known type of shuttle, whose forepart 2() is provided with a threading slot 21 and a wire keeper 22, so that it is unnecessary to use a hook in threading the shuttle as was the case in the form-of shuttle shown in Fig. 1. In this case v the yarn is passed rearwardly and through the return-inlet 23 into the bobbin chamber of the shuttle and thence through the outlet or delivery eye 24, whence it is supplied to the fabric in the process of weaving as the shuttle travels to and fro. In this case, instead of forming the separator or protector member integrally with the body of the shuttle, as in the form first described, I cut a narrow slot or kerf in the forepart of the shuttle and insert therein a sheet 25 of light material, such as aluminum, which is fastened in place and extends 'rearwardly in substantial parallelism with the side wall of the bobbin chamber to theV neighborhood of the delivery eye 24. Thisis sloped downwardly at 25a toward its rear end so as to avoid forming any angle or projection against which the whipping yarn could catch.

What I claim is:

.1. A loom shuttle embracing in its construction, a shuttle body provided with a bobbin-receiving chamber intermediate its .y each other.

` 2. A'loom shuttle embracing in its construction, a Ishuttle body provided intermediate its rear and its foreparts with a bobbin-receiving chamber, whose side wall is provided intermediate of its ends with a yarn delivering outlet, and means projecting rearwardly from the forepart and integral therewith and longitudinally spaced from said lateral wall of the bobbin-receiving chamber to allow the yarn to move rearwardly to said lateral eye without contact with the stretch of yarn uncoiling from the bobbin.

3. A loom shuttle embracing in its construction, a shuttle body provided with a bobbin-receiving chamber intermediate of; its rear part and its forepart, one side wall of said chamber being provided with a yarn delivering outlet, that portion of the shuttle bodyV alongside the forward portion of said chamber being vertically slotted to vform a' return passage for the yarn to said outlet whereby the return stretch of yarn passing to said outlet from the forepart is guarded against entanglement with the stretch of yarnruncoiling from the bobbin.

4. A loom shuttle embracing in its construction, a shuttle body provided with a bobbin-receiving chamber intermediate of its rear part and its forepart, one lateral wall of said chamber being provided intermediate of itsends with an outlet for the,- yarn, a yarn protecting member extending rearwardly from the forepart in longitudinally spaced relation to the said lateral wall, said member having its top downwardly inclined toward its rear end to prevent catching of the uncoiling stretch of yarn in its whipping movement as it passes toward the forepart. 4

5,. A lloom shuttle embracing in its construction, a shuttle body provided ywith a bobbin-containing chamber intermediate of its .rear part and its forepart, a rearwardly extending partition secured to said forepart and arranged in longitudinally spaced relation to the front portion of the side wall of said chamber, said side wall being provided with a yarn outlet adjacent the rear end of said partition, the forepart being provided with a yarn passage including yarn tensioning means and being provided with a yarn guiding passage for guiding said yarn into the space formed between sald partition and the adjacent side Wall.

In witness whereof, I have subscribed the above specification.

JOSEPH COLDWELL. 

